Samsung’s Galaxy S25 Edge has hit the market, and it’s not just about looking sleek—it’s a showcase of cutting-edge engineering. At just 5.8mm thick and 163g, this phone packs flagship power into a “razor-thin” frame, tackling long-standing smartphone design challenges. The brand has now detailed how it achieved this thickness without compromising durability and performance.
The S25 Edge, Samsung’s slimmest S-series phone yet, blends an titanium frame with Corning Gorilla Glass Ceramic 2 on the front (a first for the S25 lineup) and Gorilla Glass Victus 2 on the back. Its 6.7-inch LTPO AMOLED display matches the S25+ in size but keeps things light.
To fit a 200MP camera and Snapdragon 8 Elite chip into this slim profile, Samsung engineered a new mounting system for internal components, achieving 0.1mm precision after multiple prototypes. The 200MP camera — a standout feature shared with the S25 Ultra — is now over 10% thinner, thanks to redesigned autofocus and optical image stabilization systems, along with a new two-layer camera housing.
Cooling was reportedly a challenge in such a thin device, but Samsung managed to include a vapor chamber that’s 10% larger than the one in the S25+. It also features a ‘hole structure’ design—a cutout in the metal frame that allows direct heat transfer from the chipset to the vapor chamber. This is paired with a tailored thermal interface to manage heat from other components.
Not every spec of this phone is impressive, and Samsung’s aware of it
Let’s be honest — a 3,900mAh battery just isn’t enough to deliver a true flagship experience throughout the day. And unlike modern Chinese flagships, a quick 5–10-minute charge doesn’t make much difference either. The battery is paired with 25W charging, which feels underwhelming by today’s standards. Performance tests suggest the S25 Edge performs inferior to the S25+ under prolonged stress, possibly due to optimizations aimed at preventing rapid discharge.
Priced at $1,099, the S25 Edge comes in Titanium Silver, Jetblack, and Icyblue, with IP68 water and dust resistance. Lessons from its camera design may shape the S26 series, and rumors suggest the Galaxy Z Fold 7 could borrow its slim-down approach.
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